I have two questions on projects in areas that are seismic regions D or more restrictive and flood prone/high water table:
NFPA 13 (2016) Section 126.96.36.199 where clearance is provided by a pipe sleeve, 4 in. pipe & larger require 4 in. larger pipe sleeve. So if we are providing a below grade wall or floor penetration, that experiences high water tables and flooding.
What are the most common practices to prevent ground water intrusion through the pipe sleeve?
NFPA 13 Section 188.8.131.52 states - where required, the clearance shall be filled with flexible material that is compatible with the piping material. Is this most likely a water proofing or rated caulk?
My original thoughts lead me to something like a Metraflex Sliding MetraSeal or any pipe sleeve seal on the market, but think that would go against the internal pipe sleeve clearance requirements. Any suggestions on best practices?
Posted anonymously for discussion. Discuss This | Submit Your Question | Subscribe
Subscribe and learn something new each day:
Thank You to Our Top
October '20 Contributors!
Sprinkler Designer or Engineer?
Get all of our tools, including the Sprinkler Database, Friction Loss Calculator, Fire Pump Analyzer and more:
Daily discussions are open-ended fire protection, fire alarm, and life safety questions submitted anonymously for the benefit of sharing expertise and learning from other perspectives. Anyone can submit a question here:
2020 PE Prep Guide
PE Prep Series
2020 PE Prep Series
(Click to enlarge)
Visit July-October for daily Fire Protection PE Exam sample questions.
Solutions are posted the day after posting.
Comment with your solutions, questions or clarifications.
Please note that questions posted are unofficial and in accordance with NCEES rules are intended to be similar to actual exam questions, not actual exam questions themselves.